1. Introduktion
The Novastar MRV412-N is a general-purpose LED receiving card developed by NovaStar Tech Co., Ltd. It is designed to control LED video walls and display screens, offering advanced features for superior visual performance.
For PWM driver ICs, a single MRV412-N supports 8-bit video sources and resolutions up to 512x512@60Hz. For common driver ICs, it supports 8-bit video sources and resolutions up to 512x384@60Hz.
The MRV412-N supports various functions including Color Management, 18bit+ grayscale processing, Pixel Level Brightness and Chroma Calibration, Quick Adjustment of Dark or Bright Lines, Multi-batch Adjustment, Low Latency, 3D display, Individual Gamma Adjustment for RGB, and 90° Image Rotation. These features significantly improve the display effect and user experience.
The card utilizes 12 standard HUB75E connectors for communication and supports up to 24 groups of parallel RGB data, making it suitable for diverse on-site setups.
2. Specifikationer
2.1 Generelle specifikationer
- Modelnummer: MRV412-N
- Displayfunktion: Video
- Tube Chip Color: Fuld farve
- Tilpasning: Ja
- Meget bekymrende kemikalie: Ingen
- Oprindelse: Fastlandet Kina
- Pakkedimensioner: 20 cm (længde) x 13 cm (bredde) x 3 cm (højde)
- Pakkevægt: 0.2 kg
2.2 Display Effect Improvements
- Farvestyring: Supports standard color gamuts (Rec.709 / DCI-P3 / Rec.2020) and custom color gamuts for precise color reproduction.
- 18bit+: Enhances LED display grayscale by 4 times to prevent grayscale loss at low brightness, resulting in smoother images.
- Pixel Level Brightness and Chroma Calibration: Integrates with NovaStar's high-precision calibration system for pixel-level brightness and chroma calibration, ensuring high consistency.
- Quick Adjustment of Dark or Bright Lines: Corrects brightness discrepancies at module or cabinet seams for improved visual experience.
- Multi-batch Adjustment: Minimizes display discrepancies between cabinets or modules from different production batches.
- Lav forsinkelse: Can be enabled to reduce video source latency to 1 frame (requires modules with driver ICs with built-in RAM). Default is disabled.
- 3D support: Compatible with controllers that support 3D functionality for 3D output.
- Individual Gamma Adjustment for RGB: Allows individual adjustment of red, green, and blue gamma via NovaLCT and compatible controllers to control image non-uniformity and white balance offset.
- 90° billedrotation: Display image can be rotated in multiples of 90° (0°/90°/180°/270°).
2.3 Maintainability and Reliability Improvements
- Kortlægning 1.1: Displays controller number, receiving card number, and Ethernet port information for easy identification of connection topology.
- Settings of a Stored Image: Allows customization of the image displayed during startup or when the Ethernet cable is disconnected/no video signal.
- Temperatur og voltage Overvågning: Monitors receiving card temperature and voltage without external devices.
- Cabinet LCD Support: If applicable, the cabinet's LCD module can display temperature, voltage, single run time, and total run time.
- Bitfejldetektion: Real-time monitoring of Ethernet port communication to aid in network troubleshooting.
- Firmware Program Readback: Firmware program can be read back and saved to a local computer.
- Configuration Parameter Readback: Configuration parameters can be read back and saved to a local computer.
- Loop Backup: The receiving card and controller can form a loop for primary and backup line connections, ensuring normal display even if a line fault occurs.
- Dual Program Backup: Two copies of the firmware program are stored at the factory to prevent issues during program updates.
- Dual Backup of Configuration Parameters: Configuration parameters are stored in both the application and factory areas, allowing restoration if needed.
2.4 Fysiske dimensioner
The board thickness is not greater than 2.0 mm. The total thickness (board thickness + thickness of components on the top and bottom sides) is not greater than 20.0 mm.
3. Opsætning og forbindelser
The MRV412-N receiving card features various connectors for integration into an LED display system. Refer to the diagram below for component identification.
3.1 Connector Functions
- HUB75E Connectors (12 interfaces): These are used to connect to the LED display modules.
- Strømforbindelse: Connect to the input power supply. Either of the available power connectors can be used.
- Gigabit Ethernet-porte: Used to connect to the sending card (controller) and for cascading multiple receiving cards. Each Ethernet port can function as either an input or an output.
- 5-Pin LCD Connector: Used to connect to an external LCD module, if applicable.
3.2 Selvtestknap
The self-test button allows you to display test patterns on the screen without an active Ethernet connection. To activate:
- Ensure the Ethernet cable is disconnected.
- Press the button twice in quick succession to display the first test pattern.
- Press the button again to cycle through available test patterns.
4. Betjeningsvejledning
4.1 Indikatorlys
The MRV412-N features two indicator lights to provide status information:
| Indikator | Farve | Status | Beskrivelse |
|---|---|---|---|
| Løbeindikator | Grøn | Blinker en gang hver 1.s | Receiving card functioning normally. Ethernet cable connection is normal, and video source input is available. |
| Blinker en gang hver 3.s | Ethernet-kabelforbindelsen er unormal. | ||
| Blinker 3 gange hvert 0.5 sekund | Ethernet-kabelforbindelsen er normal, men videokildeindgangen er ikke tilgængelig. | ||
| Blinker en gang hver 0.2.s | Receiving card failed to load the program in the application area and is now using the backup program. | ||
| Blinker 8 gange hvert 0.5 sekund | Der er opstået en redundansskifte på Ethernet-porten, og loop-backup'en er trådt i kraft. | ||
| Strømindikator | Rød | Altid tændt | Strømtilførslen er normal. |
4.2 Customizing Stored Images
The MRV412-N allows you to customize the image displayed during startup or when the Ethernet cable is disconnected or there is no video signal. This feature can be configured through the associated control software.
5. Vedligeholdelse
To ensure the longevity and optimal performance of your Novastar MRV412-N receiving card, follow these general maintenance guidelines:
- Hold rent: Regularly clean the card and its connectors to prevent dust accumulation, which can lead to overheating or poor connections. Use a soft, dry cloth or compressed air.
- Miljøforhold: Operate the card within recommended temperature and humidity ranges. Avoid extreme conditions.
- Firmware and Configuration Backup: The card supports Firmware Program Readback and Configuration Parameter Readback. Regularly back up your firmware and configuration settings to a local computer. This is crucial for recovery in case of data corruption or accidental changes.
- Dual Program Backup: The card is equipped with dual program backup, meaning two copies of the firmware are stored. If the application program becomes corrupted, the card can revert to the factory backup program.
- Dual Configuration Parameter Backup: Configuration parameters are stored in both the application and factory areas. If needed, you can restore parameters from the factory area.
6. Fejlfinding
This section provides guidance on diagnosing and resolving common issues with the MRV412-N receiving card.
6.1 Using Indicator Lights for Diagnosis
Refer to the 'Indicator Lights' table in Section 4.1 to diagnose issues based on the status of the Running and Power indicators. For exampdet:
- If the green Running indicator flashes once every 3 seconds, the Ethernet cable connection is abnormal. Check the cable and connections.
- If the green Running indicator flashes 3 times every 0.5 seconds, the Ethernet cable connection is normal, but the video source input is unavailable. Verify the video source.
- If the green Running indicator flashes once every 0.2 seconds, the card is using its backup program. This indicates a potential issue with the main program in the application area.
6.2 Network Communication Problems
The MRV412-N features Bit Error Detection, which provides real-time monitoring of the Ethernet port communication. If you experience network issues, check the error detection logs (via control software) to pinpoint problems.
6.3 Display Faults and Redundancy
The card supports Loop Backup. If a fault occurs in the primary line connection between the receiving card and controller, the system can automatically switch to the backup line, allowing the screen to continue displaying the image normally. Ensure your system is configured for loop backup for enhanced reliability.
6.4 Konfigurationsproblemer
If display issues arise due to incorrect configuration, utilize the Dual Backup of Configuration Parameters feature. You can restore the configuration parameters from the factory area to the application area using the appropriate software tools.
7. Brugertips
- New Installations Only: The MRV412-N receiving card is primarily suitable for installing new LED display screens. It is generally not recommended for repairing existing LED displays due to potential compatibility issues between old and new card versions, which may require software customization.
- Compatibility for Repairs: If using for repair, be aware that compatibility issues with existing modules or control systems may arise. Ensure you have the technical expertise to address such issues, as returns/refunds may not be supported for incompatibility.
- Full Color Capability: The MRV412-N supports full-color display, ensuring vibrant and rich visuals for your LED screen.
- P5 Panel Compatibility: The card's resolution support (up to 512x512@60Hz for PWM driver ICs, 512x384@60Hz for common driver ICs) makes it suitable for various panel types, including P5 panels, depending on the overall system design and pixel configuration.
- Professionel installation anbefales: For optimal performance and to avoid potential issues, it is highly recommended that the control card and controller are installed and debugged by qualified professionals.
8. Garanti og support
8.1 Certificeringer
The MRV412-N is certified with RoHS and EMC Class A standards.
Users are advised to confirm that the product meets any specific certifications required by their country or region of sale. Failure to do so may result in legal risks, for which the customer would be responsible, or NovaStar may reserve the right to claim compensation.
8.2 Teknisk support
For technical assistance, installation guidance, or debugging services related to LED modules, control systems, and power supplies purchased from the official store, remote support services may be available. Please contact your vendor or NovaStar directly for support inquiries.
